Improvement in wheel-harrows



2 Sheets-Sheet 1.

E. R. POWELL.

WHEEL HARROW.

No. 109,754. Patented Nov. 29, 1870.

. v2 Sheets-Sheet 2.

E. R. POWELL. WHEEL HARROW.

No 109,754. Patented Nov. 29, 1870.

tam .%txtee EDWIN B. POWELL, OF JEFFERSONVILLE, VERMONT.

Letters Patent No. 109,754, dated November 29, 1870.

IMPROVENIENT IN WHEE-L-HARROWS.

The Schedule referred to in these Letters Patent and making part of thesame.

Nature and Objecls of the Invention.

The machine adjusted for use consists of a sulky frame, a low truckbetween the wheels of the same connected to it by a chain, and one of aset of dragharrows, assorted as to form of wood and character of teeth,hinged at its front end to said truck, and connected at its rear end bya chain passing over suitablyarranged pulleys on the main frame to ahand-lever, by which it may be suspended clear of the ground, whendesired.

The improvements consist- First, in the employment, in connection withthe sulky-frame, of the low truck attached by chains, and connected tothe harrow by hinge-joint, and the chainconnection withthcelevating-lever, whereby the harrow is rendered entirely free fromvertical constraint in operation, while it is perfectly under thecontrol 0 the driver.

Second, in a peculiar construction of the tooth.

Third, iu a peculiar construction and relative arrangement of the partsof the frame.

Description of the Accompanying Drawing.

Figure 1 is a plan view of my impro ved machine in illustrative form.

Figure 2 is a longitudinal section on the line fig. 1.

Figure 3 is a perspective view of the form of tooth, shown in figs. 1and 2, detached.

Figures 4 and-5 are perspective .views of different forms of harrowproper from that shown in figs. 1-

and 2. l

- Figure 6 is a perspective view of one of the teeth of the barrow,shown in fi 4, detached.

In all the figures like lettersindicate corresponding parts.

General Description. A in the drawing represents an axle-tree B B,wheels; C, a rigid tongue; and 1), a drivers seat, (all of which partsmay be of any usual construction) constituting a sulky-frame, which isemployed to drag and carry the burrow proper, as required.

E represents an axle-tree; and F F, a pair of wheels, constituting atruck, which forms the medium of attachment and support for the frontend of tho harrow.

G G G represent different forms of harrow, either 'of which may beemployed as occasion may require;

and

g g, figs. 1, 2,3, and 5, and pi, figs. 4 and 6, the difl'erent teeth ofthe same.

11 H are drag-chains attaching the truck axle E to the tongue 0; and

I I, stay-chains from axle-tree A, to limit its'lateral and forwardmovement relatively to the frame.

e 0 represent clongations of the spindles of the truckaxle E; and

iVI is it Ollitill attaching the rear and of the barrow v to theelevating-lever L.

N is a grooved pulley, affording the requisite elevated support for thechain M; and

O, a supplementary one, reflexing the chain to the line of draft of thelower end of the lever L, to which the chain is attached.

' e'rcprescuts a rearward cstcnsion of the tongue (J; and

1,a curved U-shapedmetallic bracket projecting upward from saidextension, and providing bearings for the pulleys N O.

The teeth g, which forn'i part of my improvements, consist of threeparts, viz., a cast point, 1, a steel mold-board, 2, and a cast orwrought-iron bolt, 3, of the peculiar form represented in fig. 3.

An extension, 4, of'a bracing-rib on the point 1, provided with one ormore stud'bolts or rivets, unites the point and mold-board. The head 5of bolt 3 is similarly provided and attached. The compound tooth issecurely attached by the said bolt and an additional one passing throughthe perforated lug 6 on the point.

The steel mold-boards 2 occupy the positions where the principalfriction and wear would otherwise occur, and remove nearly all liabilityto them, while their small size and simple form enable them to be addedat a trifling additional first cost,

The points 1, ii'brokcn, can be cheaply replaced.

The double teeth g also have the cast points 1 and steel mold-boards 2,as indicated.

The chains H, I, and M, are each attached at one end by an eye-bolt orstaple, h i 'lll, and at the other by ahook, it t m, to enable the readydetachment of the truck and harrow, when desired. The particularrelative position of these staples and hooks is variable. The lever L isfurcatcd to embrace the tongue J9, this portion being metallic, and awooden handle, I, is

secured between the furcate ends of the said metallic portion.

Operation.

The harrow G, shown in figs. l and 2, is adapted for covering broadcastseed, turning the ground from each side to the center. That, Gr, shownin fig. 4, having the form of teeth shown in detailin ii". 6, is forpulverizing or mellowing the ground preparatory to planting, or forturning in broadcast seed. That,

i", shown in fig. 5, which has the same form of teeth as G, is tooperate similarly-to the same, turning the ground all one way. Either isemployed, as required.

In passing to and from the field, or when it is de sired to throw thebarrow out of action for any reason, the lever L is operated, whichraises the rear end thereof, when the truck E 13 supports its front end.

For operation, the lever L being released, the herow is relieved ofverti ntrol.

' set .forth.

3. The axle-tree A, wheels B B, tongue 0 0, seat 1), pulley-bracket P NO, and hand-lever L l, the whole constituting an improved sulky-frame,as constructed, combined, and arranged in the manner shown anddescribed, for the purposes set forth.

EDWIN R. HOWELL.

\Vit-nesses A. O. FLETCHER, ELIAS OIIUCKWELL.

